Charles a



(No Model.)

Patented Aug. 12, 1890.

ATTORNEY UNITED STATES CHARLES A. LIFE, OF NEWV YORK, N. Y.

ELECTRIC CONDUCTOR TERMINAL.

SPECIFIGATION forming part of Letters Patent No. 433,948, dated August 12, 1890.

Application filed May 5, 1890. Serial No. 350,569. (No model.)

T0 at whom it 17mg concern:

Be it known that I, CHARLES A. LIEB', a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Terminals for Dynamos, &c., of which the following is a specification.

My invention relates to improvements in the terminals or connections for dynamos, motors, and like electrical apparatuses.

Heretofore in making connection between terminals and other parts of the machine it has been customary to make the end of the wire or wires naked, and to introduce them into a hole or recess formed in the part where the connection was made, and to solder the wires in place. This made the wires immediately adjacent to the soldering rigid and stiff, and in subsequent use the wires were apt to be bent more or less sharply to one side or the other, which frequently occasioned fracture of the wires adjacentto the place of soldering. Thus it frequently happened that defective connection resulted, and sometimes the wires broke off entirely. By my invention I obviate this serious defect in the old methods and at the same time secure a very greatly improved terminal, not only on the score of durability, but also on the score of finish and appearance.

Broadly stated, my invention consistsin forming in the end piece, or what I will call the coupler of the terminal, a hole having two diameters, one of them large enough to receive insulated wire or wires and the other of such size as to receive the end of the wires after the insulating material has been removed.

In the drawings hereof the same referenceletters indicate the same parts in all the figures.

Figure 1 is an elevation of one form of my invention, showing the car through which the bolt-hole passes at one side of the coupler. Fig. 2 is an edge view of that which is shown in Fig. 1, and Fig. 3 is a vertical section on the line a; g1; of Fig. 2, the device being looked at from the side. Fig. lis an elevation showing the ear through which the bolt passes as centrally located, the bare parts of the Wire projecting through a lateral opening made in the stem of the coupler. Fig. 5 is an edgewise view of that which is shown in Fig. 4, and Fig. 6 is a side viewin vertical section on the line Y Y' of Fig. 5. Fig. 7 is a plan view, Fig. 8 is an edgewise view, and Fig. 9 is a section on the line Z Z of Fig. 8,0f an alternative construction. Fig. 10 shows still a11- other modification, partly broken away to show the tubular part in section.

A is a casting composed of a stem or tubusarily, project a trifle beyond the end thereof,

and may be flattened down or riveted upon the end of the coupler. Before doing this, however, I prefer to solder the bare wires to the coupler in a manner well understood.

From the foregoing it will be perceived that my coupler presents not only a workmanlike and finished appearance, but also that the durability of the terminal or connection is greatly enhanced; also that all the soldered parts are covered up to the point where time ure can occur, because the tubular part B sustains the insulated wires for a distance beyond the right. point, and flexure can only occur beyond that end of the tube B, although there may be a slight yielding within the tube.

In Figs. 4:, 5, and 6 I show a different construction, which can be more advantageously used under certain circumstances or in certain places. In this form the ear through which the bolt-hole passes is made in line with the tubular part of the coupler, and the opening through which the bare wires project to the outside of the coupler is made laterally. In this instance the bare wires are soldered in place, if desired, and may be upset or riveted against the coupler, as in the other instance, or may be left projecting in the condition shown in these figures. It will be seen that the operation of this form of invention is the same as that shown in Figs. 1, 2, and 3.

In Figs. 7, 8, and 9 I show a form of my invention in which there is no tubular part corresponding to the part B, as in the other figures, but in lieu thereof the hole having the two diameters is made in one side of a disk which corresponds to the ear in the other figures. The method of operation of this form is the same as the others. In some instances the presence of the tubular part 1; is inconvenient and it is found more desirable to have a simple disk, as shown in these figures. It also materially reduces the cost of the coupler.

In Fig. I show still another form in which an opening J is made below the ear 0, at

which opening the wires maybe conveniently secured.

It will be obvious to those who are familiar with this art that modifications may be made in the details of construction and still the gist of my invention be employed. I do not therefore limit myself to that which is spe cifically shown and described. All that is of the essence of my invention is that the covered wires beyond the bare extremity thereof shall be for at least a little distance supported by the coupler, so that fiexure will not occur in or adjacent to the soldered, and consequently stiffened, parts, or at least not to any damaging extent.

It will be observed that by my improved construction a serious defect in terminals as heretofore made is obviated, to wit, the uncertainty regarding the sufficiency of the soldering, whereby the bare wires are held to the connector. Under my plan the bare wire or wires extend somewhat beyond the side or end of the connector and are riveted or spread apart over the metal adjacent to the hole, and sometimes I countersink the small hole to receive the head thus formed, which makes the exterior of the connector more smooth and finished in appearance.

I claim 1. The combination, in a terminal, of an in: sulated electric wire and a coupler, the portion of the wire which is within the coupler being partly bare and partly insulated, the end of the bare Wire projecting beyond the coupler and there soldered, substantially as set forth.

2. A coupler for terminals, &c., comprising,

essentially, a piece of metal or other 0011- ductor of electricity, having a recess therein of two diameters, one of them adapted to receive the insulated Wire and the other the bare wire, and an ear attached eccentrically to the axial line of said recesses, substantially as set forth.

3. A coupler for, terminals made of a single piece of metal comprising, essentially, a stem portion having a recess therein of two diameters, an car at one end to receive the connecting screw or bolt, and an opening between the ear and the stem in which the bare wire or wires may be exposed, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 30th day of April, A. D. 1800.

oHAaLEs A. LIEB.

\Vitnesses:

FREDERICK SMITH, PHILLIPS ABBOTT. 

